Sleep talking, also called somniloquy, is relatively common. It can happen during any stage of sleep and can be anything from a few mumbled words to a full conversation. Most people who talk in their sleep don’t realize they’re doing it until someone else tells them.

What Causes Sleep Talking?

Sleep isn’t a completely quiet state for the brain. While you’re asleep, your brain moves through several stages, and different parts of the brain remain active throughout the night. During some stages, the brain can produce speech or other behaviors even though you’re not fully awake.

Sleep talking can occur on its own, but it’s also associated with several other factors, including:

  • Stress or anxiety
  • Sleep deprivation
  • Irregular sleep schedules
  • Fever or illness
  • Certain medications
  • Alcohol or other substances
  • Other sleep disorders

Sometimes, there is no obvious reason. A person may simply talk in their sleep occasionally without having an underlying sleep problem.

Sleep talking can also run in families, and it’s more common in children than adults. Many children that do sleep talk eventually stop as they get older.

What Does Sleep Talking Sound Like?

There’s a wide range of what can be considered normal sleep talking.

Someone might mumble something that doesn’t make much sense, speak clearly for a few seconds, or even appear to carry on a conversation. The words may be related to a dream, but they don’t necessarily reveal what a person is dreaming about.

And despite what you may have heard, sleep talking isn’t a reliable way to find out someone’s secrets.

People generally don’t have conscious control over what they’re saying while they’re asleep, and what they say doesn’t necessarily reflect their actual thoughts or feelings.

Is Sleep Talking a Sign of a Sleep Disorder?

Usually, occasional sleep talking is nothing to worry about.

However, it’s worth paying attention if sleep talking happens frequently or is accompanied by other unusual behaviors during sleep. For example, some people may talk, yell, move around, or act out their dreams as part of a sleep disorder.

Sleep talking can occur alongside sleepwalking, night terrors, or REM sleep behavior disorder, or in people with sleep-disordered breathing.

That last connection is particularly important because obstructive sleep apnea can disrupt sleep repeatedly throughout the night. While sleep talking isn’t itself a typical sign of sleep apnea, unusual nighttime behaviors or vocalizations may be noticed by a bed partner along with more familiar symptoms like loud snoring, gasping, choking, or pauses in breathing.

If someone regularly notices unusual behaviors while you’re asleep, tell your doctor or a sleep specialist what they’ve observed.

Can Stress Make You Talk in Your Sleep?

It definitely can. Stress doesn’t directly cause sleep talking by itself, but stressful periods affect sleep quality and make certain parasomnias, including sleep talking, more likely.

You may notice more sleep talking when you’re going through a particularly stressful period, aren’t getting enough sleep, or your normal sleep schedule has been disrupted.

Getting consistent, adequate sleep and maintaining a regular sleep schedule help reduce some factors that contribute to sleep talking.

When Sleep Talking Is More Than Just Talking

Sleep talking is often harmless, but it can be part of a much bigger picture when it comes to nighttime behavior and sleep quality.

If your partner tells you that you’re talking, yelling, moving around, or doing other unusual things while you’re asleep, don’t automatically assume it’s nothing. Paying attention to these observations can reveal patterns you wouldn’t notice yourself.

And if you’re consistently tired despite spending enough time in bed, waking up frequently, or being told that you snore or stop breathing during sleep, those symptoms deserve attention too.

At Sleep Dynamics, we can help evaluate what’s happening while you sleep and determine whether further testing or treatment may be appropriate. Better understanding your sleep is often the first step toward getting more restful nights.